I thought I'd reverted to Win8...
 

I reluctantly upgraded to Win10 back in the Summer (used the free download) but yesterday I happened to notice that the C: drive is still labelled "Windows8_OS". The 'properties' tab confirmed the same, yet the Computer Properties correctly displays a big 'Windows 10 O/S' screen.

At first I was afraid it had somehow reverted to Windows8 but everything seemed okay (I noticed it after adding a new User Account for my son and everything seemed to have slowed right down, so I was poking around looking for answers).

Is this just a drive-label issue that should've been changed during the upgrade and wasn't? My tech guy upgraded our laptop to Win10, and the C: drive on that is simply labelled 'local drive C".

Sorry, missed your post there. Windows 10 does not rename your hard drive and it remains "Windows8_OS" even though you're running Windows 10.

Thanks for that, RR... my apologies for missing yours also:)